per·​spi·​ra·​tion | \ ˌpər-spə-ˈrā-shən How to pronounce perspiration (audio) \

Definition of perspiration

1 : the action or process of perspiring
2 : a saline fluid secreted by the sweat glands : sweat

Examples of perspiration in a Sentence

She wiped the perspiration from her forehead.
Recent Examples on the Web And the odor-elimination technology and deodorizing filter removes stubborn odors that linger in fabrics, like smoke, perspiration, and food. Rachel King, Fortune, "Samsung made a closet that disinfects your clothes," 6 July 2020 In China, to slip into bed unwashed — after a day slowly accumulating grime and perspiration — is seen as unhygienic. John Kelly, Washington Post, "I used to think showering at night was weird. The pandemic has made it my habit.," 27 June 2020 The shield was getting fogged up from my breathing and perspiration ... Summer Cartwright,, "This $9 Hack Prevents Glasses from Fogging While Wearing a Mask," 24 June 2020 Silver chains on necklaces and bracelets can tarnish easily from contact with lotions, perfumes, and perspiration, and these delicate pieces often need special care. Laura Lambert, Better Homes & Gardens, "How to Clean Silver Jewelry in a Matter of Minutes," 3 June 2020 These workouts will also be the cause of plenty of perspiration, so do keep up the social distancing. Carly Mallenbaum, USA TODAY, "Itching to exercise during your quarantine? These 7 at-home workouts are free - for now," 19 Mar. 2020 That boundary layer also carries a fair amount of water vapor — evaporated perspiration. Paul Cappiello, The Courier-Journal, "Ever wonder how plants handle winter weather like wind chill? The answer? It's about water," 31 Jan. 2020 Tolliver recommends that African-American women who are interested in increasing physical activity start with low impact exercise to minimize perspiration. Jennifer Ford, Essence, "New Study Suggests Doctors Discuss Haircare With Black Women To Reduce Barrier To Exercise," 20 Nov. 2019 Three years ago, after a spate of dehydration episodes, the staff analyzed players’ perspiration with wearable patches. New York Times, "Football Players? Or Lab Rats Who Can Run and Pass?," 19 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'perspiration.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of perspiration

1583, in the meaning defined at sense 1

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Time Traveler for perspiration

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The first known use of perspiration was in 1583

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Statistics for perspiration

Last Updated

10 Jul 2020

Cite this Entry

“Perspiration.” Dictionary, Merriam-Webster, Accessed 12 Jul. 2020.

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How to pronounce perspiration (audio)

English Language Learners Definition of perspiration

somewhat formal
: the clear liquid that forms on your skin when you are hot or nervous
: the act or process of perspiring


per·​spi·​ra·​tion | \ ˌpər-spə-ˈrā-shən How to pronounce perspiration (audio) \

Kids Definition of perspiration

1 : the act or process of perspiring
2 : salty liquid given off from skin glands


per·​spi·​ra·​tion | \ ˌpər-spə-ˈrā-shən How to pronounce perspiration (audio) \

Medical Definition of perspiration

1 : the act or process of perspiring
2 : a saline fluid that is secreted by the sweat glands, that consists chiefly of water containing sodium chloride and other salts, nitrogenous substances (as urea), carbon dioxide, and other solutes, and that serves both as a means of excretion and as a regulator of body temperature through the cooling effect of its evaporation

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